LONDON — The government of Wales has a question for parents: Is it ever right to physically punish your children?

It began a 12-week feedback process on the issue on Tuesday, with officials saying they hoped to join more than 50 countries that have adopted an outright ban on the practice.

They would also be following the example of Scotland, which announced plans for a ban after a consultation of its own last summer.

“We all want to give our children the best start in life,” said Huw Irranca-Davies, the Welsh minister for children and social care, and a father of three boys. “Children do not come with an instruction manual and sometimes parents need guidance and support to help them raise healthy and happy children.”

Some opposition to a ban has already gathered. A group called Be Reasonable, named after an exemption in current assault laws for “reasonable punishment” of children by parents, says it has more than 1,500 names on a petition against the proposal, in a nation of a little over 3 million people.

“A little gentle slap here and there is just a part of teaching discipline,” a Be Reasonable campaigner, Angie Robins, a mother of three from Newport, in southeast Wales, said in a telephone interview. “It never did anyone any harm.”

The campaigners argue that the law already protects children from abuse and that the authorities should focus on enforcing those laws instead of wasting time on trivial cases and criminalizing “good parents.”

“Every child is different and needs different types of discipline,” Mrs. Robins argued, adding that such decisions should be made by the parent and not the government.

But Welsh government officials say physical punishment is outdated and ineffective, and can have negative long-term effects.

“If there is any potential risk of harm to a child, then it is our obligation as a government to take action,” Mr. Irranca-Davies said.

Sarah Lewis, a nanny of two children in the Welsh capital, Cardiff, said a ban was crucial to protect children because every parent or guardian had a different understanding of what “reasonable” punishment meant.

“I’ve seen parents publicly beat their children when they are misbehaving. and it’s outright abusive and damaging,” Mrs. Lewis said. “You can discipline a child without smacking them.”

Britain’s leading children’s charity, the N.S.P.C.C., welcomed Wales’s move. The charity has long campaigned for children to have the same protection against assault as adults, an N.S.P.C.C. spokesman said, describing it as “a common-sense move, which is about fairness and equality for children.”

Mr. Irranca-Davies said the consultation would help the government address concerns as the legislation develops.

A version of this article appears in print on , on Page A9 of the New York edition with the headline: Wales Moves Toward Ban On Slapping As Discipline. Order Reprints | Today’s Paper | Subscribe